I am using dynamic form where user add more input text boxes for a certain field he want and the name of each box change with an increment like:
<form method="post" action="somescript.php">
<input type="text" name="textbox" />
<input type="text" name="textbox1" />
<input type="text" name="textbox2" />
<input type="text" name="textbox3" />
.... and so on
</form>
I want to echo these data following a loop:
<?PHP
$k=$_POST['counter']; //counter value coming as post variable
for($i=1$i<=$k;$k++){
echo $_POST['textbox'.$i]; //something like this......?
}
?>
Please reply.
Use array notation instead.
<form method="post" action="somescript.php">
<input type="text" name="textbox[]" />
<input type="text" name="textbox[]" />
<input type="text" name="textbox[]" />
<input type="text" name="textbox][" />
.... and so on
</form>
When the form is submitted, $_POST['textbox'] will then be an array, and you can loop over it:
foreach ($_POST['textbox'] as $textbox) {
echo $textbox;
}
I just came across this issue because I had blocks of data that needed to be created dynamically and
echo $_POST["textbox$i"];
worked without the concatenation in it. Let me know if this is bad practice, it works in my situation though. The array way didn't work for me. Sorry for posting this on a 3 year old question. I'm not sure if that's bad practice. Thanks.
Related
I'm practicing form validation with JavaScript but when I try to retrieve the data from the page it submits to I can't get it.
form.html
<body>
Hello.<br />
<form onsubmit="return validate()" action="process.php" method="POST">
Enter name: <input type="text" id="name" /><br />
Enter phone number: <input type="text" id="number" /><br />
Enter password: <input type="password" id="paswd" /><br />
Is there anything else you would like to add: <input type="text" id="anything" /><br />
<input type="submit" value="Check Form" />
</form>
</body>
process.php
<?php
echo 'Here: '.$_POST['number']
?>
Whatever index I use I get " Undefined index: line 2". What am I doing wrong?
EDIT: So I can't use the id attribute I need the name? Is there anyway to prevent coding redundancy since the value of all names will be the same as the corresponding id?
You need name attribute in your fields
<input type="text" id="number" name="number" />
$_POST looks for the name attribute in the field to capture the field values and not id
Your inputs need the name of the element.
Such as:
<input type="text" id="number" name="number" />
The Php gets the form data looking these names, not the ids.
you forgot name of input:
<input type="text" id="number" name="number" />
You need to give your form elements names.
<input type="password" id="paswd" name="paswd" />
Interestingly names and ids share the same namespace. If you don't really need the ids, leave them be. Inside a validate function you can always access all elements with the elements object of the form.
// called onsubmit
var validate = function(e) {
if (this.elements["paswd"].value.length < 4) {
alert("password needs to have at least 4 characters");
return false;
}
return true
};
I usually append the input type to my ids to differentiate them from field names
<label for="paswd-txt">Password: </label>
<input type="text" name="paswd" id="paswd-txt" />
<label for="save-cb">Remember me: </label>
<input type="checkbox" name="save" id="save-cb" value="1"/>
So like Vitor Braga said your inputs need the name of the element, but you only need this if you are using PHP to hadle the values of form in the submit, if you are using javascript to validaate like you said your were praticing you can obtain the value like this:
document.getElementById("number").value
Is it possible for me to have two self submitting forms on a single page. If yes how do I allot different blocks of code to each form ?
Have a hidden input with two different values.
<form action="" ...>
<input type="hidden" name="form_no" value="0">
...
</form>
<form action="" ...>
<input type="hidden" name="form_no" value="1">
...
</form>
On the server side, different on the basis of $_REQUEST['form_no']
Or you could also add it as a name parameter in submit element.
<input type="submit" name="form0">
Use isset($_REQUEST['form0']) to differentiate.
Another way of doing it is to append a GET parameter to differentiate
<form action="<?php echo $_SERVER['PHP_SELF'];?>?form_no=0" ...>
...
</form>
<form action="<?php echo $_SERVER['PHP_SELF'];?>?form_no=1" ...>
...
</form>
Use $_GET['form_no'] to differentiate.
Name your first form form_one, and the second form form_two.
<?php
if (isset($_POST['form_one'])) {
// First form was submitted
}
if (isset($_POST['form_two'])) {
// Second form was submitted
}
?>
Two forms can be placed in a code by giving them different names and keeping their target _blank
<form action="action.asp" method="get">
First name: <input type="text" name="fname" /><br />
Last name: <input type="text" name="lname" /><br />
<input type="submit" name="submit1" value="Submit" />
</form>
<form action="action.asp" method="get">
First name: <input type="text" name="fname" /><br />
Last name: <input type="text" name="lname" /><br />
<input type="submit" name="submit2" value="Submit" />
</form>
<?php
if(isset($_GET['submit1'])){
// first form was submitted
}
if(isset($_GET['submit2'])){
// second form was submitted
}
?>
Each form has a different script specified in this example, but keep in mind that you can simply use the same php file for both actions, specifying a different block of code for each form (that's the php part above).
Someone may have a better answer, but this method has served me well in the past.
Following is my sample form.
<form METHOD="post" METHOD="post" ACTION="index.php" METHOD="post" METHOD="post" METHOD="post">
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="text" NAME="array[]" />
<input TYPE="submit" NAME="submit" VALUE="Submit" />
</form>
Basically I have 10 inputs of array. Assume my domain is http://domain.com and the file above is index.php. I am trying to fill the form automatically by using the following method.
http://domain.com/index.php?array[]=John&array[]=Kelly ... & array[]=Steven
Unfortunately, it is not working. :(
Have you tried something like this:
<?php
foreach( $_GET['array'] as $arr ) // Loop through the `array` variables of GET
echo '<input type="text" name="array[]" value="' . $arr . '" />'; // Display the the inputs
?>
However, please make sure that you use a cleaning function on $arr to prevent XSS. You will also need to check if $_GET['array'] is set or not, or PHP will whine about it.
Two things to try.
You are using the GET method with your example URL, but your form is set to POST. In your PHP, you may be looking for your data in $_POST when it's actually in $_GET. You can get data from both POST and GET using the $_REQUEST variable.
You may need to urlencode the []. ([] becomes %5B%5D when urlencoded.)
Lastly, a tip: when crafting links to send data through a GET query string, it is best practice to use & in place of the &'s in the URL.
If you are trying to fill the form from a GET request (your URL string), you have to get the values from the HTTP request in the $_REQUEST array (or $_GET or $_POST depending on the form method). Suggestion: you should change the names of the form fields to reflect the value they are storing
<form METHOD="post" METHOD="post" ACTION="index.php" METHOD="post" METHOD="post" METHOD="post">
<input TYPE="text" NAME="first_name" value="<?php echo $_REQUEST['first_name']?>"/>
Note: accessing the $_REQUEST array as shown above is not good practice as you need to check if the request variables are set before you can echo their values.
<form METHOD="post" METHOD="post" ACTION="index.php" METHOD="post" METHOD="post" METHOD="post">
<input TYPE="text" NAME="first_name" value="<?php echo isset($_REQUEST['first_name'])?$_REQUEST['first_name']:""?>"/>
I have a form with a submit button and a handler that stores data in the database. Problem is when the form is submitted, all data is cleared from the input fields. Is there a way to still show them after submit? What changes do I need to make to my form_submit function?
function mymodule_form_submit($form, &$form_state) {
//how to retain the input in the form
}
I'm looking for the most "drupalish" way to get this done?
As indicated by this previous StackOverflow question you can accomplish this with $form_state['storage'] and $form_state['rebuild'].
You can access the data using $_REQUEST['form_variable_name'] where form_variable_name is the name of the html input tag.
You then need to render the page back putting this value into the input tags value field.
<form method="POST" action="/account/contactdetails/">
<div>
<label>First name:</label>
<input type="text" name="firstname" value="<?php echo $_REQUEST['firstname']; ?>" />
</div>
<div>
<label>Last name:</label>
<input type="text" name="lastname" value="<?php echo $_REQUEST['lastname']; ?>" />
</div>
<input type="submit" value="Save" />
</form>
I'm trying to build a form using php & jquery, but I'm a little confused as to what to do with the jquery portion of it...
Basically, when the user submits the first form, I want to direct them to the "next step" form, but I want to retain the values submitted from the first one in a hidden input field...
If someone can either show me how or point me to a good tutorial, I'd appreciate it...
I don't have any of the php or jquery yet, and this is just a simplified version of the html markup...
//first.php
<form name="form1" method="post" action="second.php">
<input type="text" name="name" value="" />Name
<input type="submit" name="step1" value="Next" />
</form>
//second.php
<form name="form2" method="post" action="process.php">
<input type="hidden" name="name" value="{$_POST['name']}" />
<input type="text" name="message" value="" />message
<input type="submit" name="step2" value="Finish" />
</form>
<input type="hidden" name="name" value="{$_POST['name']}" />
should be,
<input type="hidden" name="name" value="<?php echo $_POST['name']}; ?>" />
and also sanitize the input, if you want
I don't no if there is a better way to do that.
But, when I need to do such thing, I do in this way:
<script>
<?php
foreach($_POST as $key => $valule)
{
echo "$('$key').val('$value')";
}
?>
</script>
So, in your nextstep file, all you'll need to do is set up the hidden fields and then just loop through the post vars and set each one via jquery.